Graeme Smith hit a sprightly half-century as South Africa,bidding to complete the highest successful run chase in Tests,reached 178 for two after the fourth day of the first Test against Australia on Sunday. The hosts need 454 to win.

Smith and fellow opener Neil McKenzie ensured South Africa did not show any early vulnerability as they put on 76 for the first wicket. McKenzie was caught behind off Mitchell Johnson for 35,but Smith batted on before falling for 69. South Africas resistance continued as Hashim Amla and Jacques Kallis added another 48 runs before the close.

Earlier,Australias last pair Peter Siddle and Ben Hilfenhaus had added 33 runs to take their second innings total to 207 after all-rounder Kallis had inspired a South African fightback that brought eight wickets in the morning session.